▎ 摘　　要

NOVELTY - The preparation method of graphene composite material involves adding graphite powder, potassium sulfate, phosphorus pentoxide and concentrated sulfuric acid to a reactor and then filtering, adding potassium permanganate to the filtrate and then heating, adding mixed solution of hydrogen peroxide and deionized water to the mixture and then washing, adding hydrazine hydrate to the mixture and then heating, adding ethanol, tetrabutyl titanate and acetylacetone to the mixture and then sintering, adding sodium dodecyl sulfate aqueous solution to the mixture and cooling. USE - The method is useful for preparation of graphene composite material. ADVANTAGE - The method enables preparation of graphene composite material with high specific surface area. DETAILED DESCRIPTION - The preparation method of graphene composite material involves adding graphite powder, potassium sulfate, phosphorus pentoxide and concentrated sulfuric acid to a reactor and then filtering, adding concentrated sulfuric acid solution and potassium permanganate to the filtrate and then heating, adding mixed solution of hydrogen peroxide and deionized water to the mixture and then washing using 10 %mass diluted hydrochloric acid and deionized water, adding distilled water and hydrazine hydrate to the mixture and then heating, adding 50 ml ethanol, 15 ml deionized water, 3 ml hydrochloric acid, 10 ml tetrabutyl titanate and 5 ml acetylacetone to the mixture and then sintering, adding 1 ml or 2 %mass sodium dodecyl sulfate aqueous solution, 50 ml distilled water and aqueous ammonia to the mixture and then washing using distilled water, heating at 550-650 degrees C for 2-5 hours and cooling to room temperature. An INDEPENDENT CLAIM is included for graphene composite material prepared by the method.